Hundreds of thousands of mostly young refugees are fleeing into Europe, where most countries have rapidly aging (and sometimes shrinking) populations.
For the hundreds of thousands of migrants entering the European Union, their chances of gaining asylum vary greatly depending on where they're from and in which country they apply.
Although Europe is struggling to manage the hundreds of thousands of refugees fleeing conflicts in the Middle East, Africa and elsewhere, the countries facing the biggest refugee impacts are the ones closest to the fighting.
Many Europeans, especially in the continent's south, hold negative views of immigrants and are concerned about new arrivals from outside the EU.
The three top municipalities sending children to the U.S. are all in Honduras. San Pedro Sula leads the list.
Despite the ongoing conflicts in these countries, the number of refugees around the world is considerably less than it was two decades ago, numbering between 10 million and 12 million in recent years.
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The number of Syrians who have left the country over the past two years. About half are under 18.